摘要
目的探讨骶尾部藏毛窦(PS)的影像表现,以提高诊断水平。方法回顾性分析10例经病理证实的骶尾部PS的超声、CT及MRI资料,总结其影像特征。结果 10例PS均位于骶尾部臀间裂皮肤及皮下脂肪层内;7例呈条片状,3例呈管状;病灶长径(4.5±1.8)cm、短径(1.1±0.5)cm,未累及肌肉组织,未与骶管及肛管相通;8例MRI上主要表现为等或稍长T1、稍长T2信号,部分病灶边缘见等T2信号,脂肪抑制序列呈高信号,DWI呈高信号;1例CT平扫病灶与肌肉呈等密度;2例超声表现为中央低回声,边缘等回声;8例MR增强病灶明显不均匀强化,2例多普勒超声病灶边缘血流丰富,中央血流稀疏。结论骶尾部PS有较典型影像特征。影像学检查可以提供PS的范围、深度及与邻近组织结构的关系等信息,有助于临床手术计划制定。
Objective To investigate the imaging performance of the sacrococcygeal pilonidal sinus（PS）,in order to improve the diagnostic level.Methods The data of ultrasound,CT and MRI of 10 cases of the sacrococcygeal PS confirmed by pathology were retrospectively analyzed to summarize its imaging characteristics.Results 10 cases of PS were located in the sacrococcygeal anal fissure between the skin and the subcutaneous fat layer.7cases were patchy and the rest 3cases were tubular.The long diameter and the short diameter of PS were respectively（4.5±1.8）cm and（1.1±0.5）cm.All the 10 cases of PS didn＇t involve the muscle tissue,and didn＇t interlink with the caudal and anal.8cases of PS with MRI mainly showed slightly long T1,long T2 signal,with the part of the lesions edge saw equal T2 signal.Short T1 inversion recovrey and diffusion weighted imaging of these lesions showed high signal.1case of PS with plain CT scan was equal density with the muscle.2cases of PS were hypoechoic in the central and isoechoic in the edge with ultrasonography.8cases of PS were marked inhomogeneous enhancement with MR enhanced scan.2cases of PS were rich blood flow in the lesions edge,but the blood was sparse in the center with doppler ultrasound.Conclusion The sacrococcygeal PS has fairly typical imaging characteristics.The imaging examination can provide the range,the depth of PS and the relationship with adjacent tissue that contribute to the clinical operation plan making.
出处
《医学影像学杂志》
2015年第3期514-517,共4页
Journal of Medical Imaging
关键词
骶尾部
藏毛窦
影像学诊断
Sacrococcygeal
Pilonidal sinus
Imaging
Diagnosis
